关键在本教程中:http://www.logicchip.com/android-splash-screen-progress-bar/ http://www.logicchip.com/android-splash-screen-progress-bar/您必须在可绘制文件夹中创建 un 文件:示例splas_screen.xml
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="100dp"
android:layout_height="100dp">
<item>
<color android:color="@color/main_color_grey_50"/>
</item>
<item>
<bitmap
android:gravity="center"
android:filter="true"
android:src="@drawable/logomies"
/>
</item>
</layer-list>
将新样式添加到文件 styles.xml
<style name="SplashTheme" parent ="Theme.AppCompat.NoActionBar">
<item name="android:windowBackground">@drawable/splash_screen</item>
</style>
在 AndroidManifest 文件中,您应该像 LAUNCHER Activity 一样设置 SplashActivity。
<application
android:name=".ActBenApplication"
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="@style/ActivityTheme">
<activity android:name=".main.ui.SplashActivity"
android:label="@string/app_name"
android:screenOrientation="portrait"
android:theme="@style/SplashTheme">
<intent-filter>
<action android:name="android.intent.action.MAIN"/>
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name=".main.MainActivity"
android:label="@string/app_name"
android:screenOrientation="portrait">
</activity>
</application>
重要的部分就在这里:您必须创建一个进度条所在的布局,该布局没有背景,因此进度条显示在斜线前面。
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/splash_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".main.ui.SplashActivity">
<ProgressBar
android:id="@+id/progressBar2"
style="?android:attr/progressBarStyleHorizontal"
android:visibility="visible"
android:indeterminateOnly="true"/>
</android.support.constraint.ConstraintLayout>
最后在您的 Activity.java 文件中:
public class SplashActivity extends AppCompatActivity{
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.splash);
new Handler().postDelayed(new Runnable() {
@Override
public void run() {
// This method will be executed once the timer is over
// Start your app main activity
Intent i = new Intent(SplashActivity.this, MainActivity.class);
startActivity(i);
// close this activity
finish();
}
}, 3000);
}
}
设置为设置内容视图到创建的布局。就这些..!